a_guide_to_astronomical_telescopes.pdf | |
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a_guide_to_binoculars.pdf | |
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buying_your_first_telescope_-_celestron.pdf | |
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buying_your_first_telescope_-_cosmic_pursuits.pdf | |
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collimation_-_refractor.pdf | |
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collimation_-_sct.pdf | |
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collimation_-_newtonian_s_t.pdf | |
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collimation_-_star_testing.pdf | |
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Stargazing_101.pdf | |
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messier_catalog.pdf | |
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111_deep_sky_objects.pdf | |
File Size: | 922 kb |
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